参数资料
型号: KSZ8842-16MBLI TR
厂商: Micrel Inc
文件页数: 141/141页
文件大小: 0K
描述: IC ETHERNET SW 2PORT 100LFBGA
标准包装: 1,000
控制器类型: 以太网开关控制器
接口: PCI
电源电压: 3.1 V ~ 3.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-LBGA
供应商设备封装: 100-LFBGA
包装: 带卷 (TR)
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
99
M9999-102207-1.9
Bank 48 Port 1 Control Register 1 (0x00): P1CR1
This register contains the global per port control for the switch function.
Bit
Default
R/W
Description
15-8
0x00
RO
Reserved
7
0
RW
Broadcast Storm Protection Enable
1 = enable broadcast storm protection for ingress packets on the port.
0 = disable broadcast storm protection.
6
0
RW
Diffserv Priority Classification Enable
1= enable DiffServ priority classification for ingress packets on the port.
0 = disable DiffServ function.
5
0
RW
802.1p Priority Classification Enable
1= enable 802.1p priority classification for ingress packets on the port.
0 = disable 802.1p.
4-3
0x0
RW
Port-Based Priority Classification
00 - ingress packets on port are classified as priority 0 queue if “DiffServ” or “802.1p”
classification is not enabled or fails to classify.
01 - ingress packets on port are classified as priority 1 queue if “DiffServ” or “802.1p”
classification is not enabled or fails to classify.
10 - ingress packets on port are classified as priority 2 queue if “DiffServ” or “802.1p”
classification is not enabled or fails to classify.
11 - ingress packets on port are classified as priority 3 queue if “Diffserv” or “802.1p”
classification is not enabled or fails to classify.
Note: “DiffServ”, “802.1p” and port priority can be enabled at the same time. The OR’ed
result of 802.1p and DSCP overwrites the port priority.
2
0
RW
Tag Insertion
1 = when packets are output on the port, the switch adds 802.1p/q tags to packets
without 802.1p/q tags when received. The switch will not add tags to packets already
tagged. The tag inserted is the ingress port’s “port VID”.
0 = disable tag insertion.
1
0
RW
Tag Removal
1 = when packets are output on the port, the switch removes 802.1p/q tags from packets
with 802.1p/q tags when received. The switch will not modify packets received without
tags.
0 = disable tag removal.
0
RW
TX Multiple Queues Select Enable
1 = the port output queue is split into four priority queues.
0 = single output queue on the port. There is no priority differentiation even though
packets are classified into high or low priority.
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